Stainless Steel Header Bolts for LS Engine Swaps
When swapping an LS motor into your classic chassis the durability of every exhaust flange fastener is non negotiable and Stainless Steel Header Bolts tackle that challenge head on. Machined from 300 series stainless steel these bolts hold clamp force across thousands of heat cycles and resist corrosion from road salt and humidity. Featuring a 12 point head and integrated flange each bolt allows precise torque application in tight engine bays and locks split flange headers in place to prevent leaks and loosening under constant vibration. This hardware ensures your headers stay sealed whether you are tackling street cruising or track driving.
Premium 300 Series Stainless Steel Resilience
This family of austenitic stainless steel features a high chromium and nickel content that forms a tightly bound oxide layer. As exhaust temperatures climb past 500°F, the oxide barrier protects the fastener from oxidation and scaling. In coastal or winter environments where road salt or humidity can accelerate corrosion, this alloy retains thread integrity and prevents rust seizing. By preserving clamping force through repeated heating and cooling cycles, these bolts reduce the risk of header leaks even after extended service. Maintenance is simplified since seized or corroded fasteners are virtually eliminated, sparing time and effort on removal or replacement. This durable composition performs equally well on street cruisers and track cars where exposure is extreme.
Twelve Point Head for Accurate Torque Application
The twelve point head design offers twice the engagement surfaces of a traditional hex bolt, which translates to finer torque adjustments during assembly. Installers can advance the fastener in thirty degree steps, allowing for smooth motion without overrun or tool slippage in confined engine bays. This level of control is vital when drawing split flange header surfaces together, as it ensures each port receives even clamp load and maintains a reliable seal. Reduced risk of rounding not only preserves the integrity of the bolt head but also safeguards adjacent components from damage during installation. Technicians and enthusiasts alike benefit from consistent torque application, which contributes to uniform header pressure and improves long-term sealing performance. Precise fastener placement supports optimal engine output by preventing exhaust leaks that can affect backpressure and sensor readings.
Precision Machined Flange Ensures Stable Sealing
These header bolts are CNC machined to exacting tolerances, ensuring that each thread profile aligns perfectly with LS split flange patterns and eliminates any chance of misalignment during installation. The underside of the head features an integrated flange that spreads clamping force evenly across the mating surface, preventing localized stress points that could lead to fastener loosening under constant engine vibration. Combined with precise thread clearances, the system locks itself in place as thermal expansion and contraction cycles occur, removing the need for additional locking compounds or washers. Uniform head seating on the split flange surfaces means that seal integrity is preserved without uneven compression or gaps. This attention to machining detail delivers a consistent fit on every bolt, reducing the potential for leaks and the labor associated with retorquing. As a result, these fasteners contribute directly to long-term header stability and a maintenance free experience.
Exact LS Split Flange Header Fitment
Each bolt features a 13 mm head size that mates seamlessly with common socket and crowfoot tools, allowing rapid engagement without resorting to step adapters or special wrenches. The shank diameter and thread pitch are engineered specifically for LS split flange headers, so fasteners slide in effortlessly and draw down uniformly across all ports. This precision approach minimizes the risk of cross threading and ensures full thread engagement, which is critical for maintaining mechanical integrity and a leak free seal. By streamlining the installation process, these bolts save both time and frustration, especially when working in tight engine compartments. Professionals and home builders alike can complete exhaust manifold swaps with confidence, knowing that each connection remains secure throughout countless heat cycles. The result is a smoother build process that lets you concentrate on performance and tuning rather than chasing loose flanges.
Engineered for precise fit and reliable sealing, these stainless steel header bolts let you install with confidence.